White light random laser

A technology of random lasers and white light, applied in the field of random lasers

Inactive Publication Date: 2012-09-19
BEIJING NORMAL UNIVERSITY
View PDF4 Cites 12 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, white light random lasers have not been reported

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • White light random laser
  • White light random laser
  • White light random laser

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0026] The specific implementation method will be described below in conjunction with the accompanying drawings. attached figure 1 The optical path diagram of a white light random laser.

[0027] Add appropriate amount of three dyes Coumarin440 (C-440), Coumarin6 (C-6) and Oxazine to ethanol, and add appropriate amount of titanium dioxide nanoparticles to form laser working material and feedback system.

[0028] The working characteristics of the three dyes are: after the coumarin Coumarin440 (C-440) and coumarin Coumarin6 (C-6) dyes are pumped by a pulse beam of 355nm, they respectively obtain blue and green laser. The oxazine dye is pumped by a 532nm pulse beam and then outputs a red laser with a wavelength of 647.42nm. The specific process of the laser is: use the 355nm light generated by the triple frequency of the nanosecond pulsed YAG laser as the pump light to irradiate the mixed dye solution, and the coumarin Coumarin440 (C-440) and coumarin Coumarin6 (C-6) dyes are...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

A white light random laser outputs a three primary colors by the aid of a laser pump mixed with dyes, and acquires white lights with narrow line width and high strength by means of using titanium dioxide (TiO2) nanoparticles as random scatterer for providing positive feedback, wherein the three primary colors comprise red, green and blue. The dyes used for generating the three primary colors of red, green and blue include coumarin 440 (C-440), coumarin 6 (C-6), pumping source of 355nm light and Oxazine with pumping source of 532nm. The basic principle of the white light random laser includes that by the aid of the nanosecond pulsed laser pumping with a 355nm wavelength, red light (R) is generated by means of coumarin C-440 blue light (B), coumarin C-440 green light (G) and a litter portion of light close to the 532nm green light as pumping oxazine, and most of the light close to the 532nm green light is used as the green light (G) of the white light. The white light random laser adopts the random laser principle, and outputs lasers by using titanium dioxide nanoparticles as random scatterer for providing positive feedback.

Description

technical field [0001] The invention belongs to the field of optoelectronic technology and relates to a novel random laser generating white light. Background technique [0002] Lasers with multi-wavelength output and white light lasers are urgently needed light sources in optoelectronic technology. Common white light sources are incandescent lamps or halogen lamps (such as bromine tungsten lamps, iodine tungsten lamps, etc.). The coherence of this white light source is extremely poor, which cannot meet the needs of many applications. Some conventional lasers can also produce white light, such as argon-ion lasers. But this kind of laser has high cost, high energy consumption and large volume, which limits its application. Random laser is a new type of laser developed in recent years. It has a simple structure, does not need a traditional resonant cavity, and is very convenient for debugging. But the white light random laser has not been reported yet. [0003] The invent...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
Patent Type & Authority Applications(China)
IPC IPC(8): H01S3/213H01S3/10
Inventor 刘大禾陈淑静石锦卫
Owner BEIJING NORMAL UNIVERSITY
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap